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From: Routing Table Analysis (no email)
Date: Fri Feb 03 2006 - 13:10:19 EST
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to
If you have any comments please contact Philip Smith <>.
Routing Table Report 04:00 +10GMT Sat 04 Feb, 2006
Analysis Summary
----------------
BGP routing table entries examined: 180632
Prefixes after maximum aggregation: 100801
Unique aggregates announced to Internet: 87940
Total ASes present in the Internet Routing Table: 21423
Origin-only ASes present in the Internet Routing Table: 18625
Origin ASes announcing only one prefix: 8836
Transit ASes present in the Internet Routing Table: 2798
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 1
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1487343776
Equivalent to 88 /8s, 167 /16s and 16 /24s
Percentage of available address space announced: 40.1
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 67.8
Total number of prefixes smaller than registry allocations: 87709
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 37914
Total APNIC prefixes after maximum aggregation: 16015
Prefixes being announced from the APNIC address blocks: 35691
Unique aggregates announced from the APNIC address blocks: 17449
APNIC Region origin ASes present in the Internet Routing Table: 2459
APNIC Region origin ASes announcing only one prefix: 686
APNIC Region transit ASes present in the Internet Routing Table: 380
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 211707872
Equivalent to 12 /8s, 158 /16s and 103 /24s
Percentage of available APNIC address space announced: 66.2
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 121/8, 122/7, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 94993
Total ARIN prefixes after maximum aggregation: 56485
Prefixes being announced from the ARIN address blocks: 74275
Unique aggregates announced from the ARIN address blocks: 28409
ARIN Region origin ASes present in the Internet Routing Table: 10479
ARIN Region origin ASes announcing only one prefix: 3910
ARIN Region transit ASes present in the Internet Routing Table: 969
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 285983232
Equivalent to 17 /8s, 11 /16s and 194 /24s
Percentage of available ARIN address space announced: 71.0
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 35525
Total RIPE prefixes after maximum aggregation: 23950
Prefixes being announced from the RIPE address blocks: 32560
Unique aggregates announced from the RIPE address blocks: 21870
RIPE Region origin ASes present in the Internet Routing Table: 7596
RIPE Region origin ASes announcing only one prefix: 3977
RIPE Region transit ASes present in the Internet Routing Table: 1262
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 230751616
Equivalent to 13 /8s, 192 /16s and 253 /24s
Percentage of available RIPE address space announced: 68.8
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
RIPE Address Blocks 62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 10324
Total LACNIC prefixes after maximum aggregation: 3474
Prefixes being announced from the LACNIC address blocks: 8523
Unique aggregates announced from the LACNIC address blocks: 5126
LACNIC Region origin ASes present in the Internet Routing Table: 668
LACNIC Region origin ASes announcing only one prefix: 219
LACNIC Region transit ASes present in the Internet Routing Table: 121
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 25056000
Equivalent to 1 /8s, 126 /16s and 83 /24s
Percentage of available LACNIC address space announced: 37.3
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1871
Total AfriNIC prefixes after maximum aggregation: 877
Prefixes being announced from the AfriNIC address blocks: 1235
Unique aggregates announced from the AfriNIC address blocks: 872
AfriNIC Region origin ASes present in the Internet Routing Table: 146
AfriNIC Region origin ASes announcing only one prefix: 44
AfriNIC Region transit ASes present in the Internet Routing Table: 22
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 3041536
Equivalent to 0 /8s, 46 /16s and 105 /24s
Percentage of available AfriNIC address space announced: 9.1
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 982 6462 204 CHINANET-BACKBONE
9583 849 109 15 Sify Limited
4755 801 258 64 Videsh Sanchar Nigam Ltd. Aut
4766 710 3927 301 Korea Telecom (KIX)
1221 668 1428 476 Telstra Pty Ltd
9498 519 211 71 BHARTI BT INTERNET LTD.
7545 516 108 70 TPG Internet Pty Ltd
17676 480 6949 104 Softbank BB Corp.
17488 449 27 7 Hathway IP Over Cable Interne
9443 411 94 85 Primus Telecommunications
4802 370 75 161 Wantree Development
2907 338 1763 315 SINET Japan
9929 335 218 50 China Netcom Corp.
7474 330 227 228 SingTel Optus Pty Ltd
18101 328 68 26 Reliance Infocom Ltd Internet
17974 315 77 37 PT TELEKOMUNIKASI INDONESIA
17557 311 25 161 Pakistan Telecom
4780 282 226 16 Digital United Inc.
9837 271 78 169 Powertel Ltd
9800 259 410 67 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1466 6263 948 AT&T WorldNet Services
4323 1208 720 236 Time Warner Telecom
174 1032 5789 945 Cogent Communications
721 1029 21970 310 DLA Systems Automation Center
6197 987 621 458 BellSouth Network Solutions,
701 949 8064 792 UUNET Technologies, Inc.
18566 901 272 8 Covad Communications
2386 884 501 691 AT&T Data Communications Serv
1239 852 2792 601 Sprint
209 680 3606 537 Qwest
20115 676 565 355 Charter Communications
6198 636 449 238 BellSouth Network Solutions,
11492 628 81 12 Cable One
22773 617 1478 37 Cox Communications, Inc.
19262 612 1768 149 Verizon Global Networks
855 573 243 65 Canadian Research Network
852 570 1092 379 Telus Advanced Communications
19916 563 49 54 OLM LLC
3602 521 127 106 Sprint Canada, Inc.
5668 516 143 24 CenturyTel Internet Holdings,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 587 1954 463 UUNET - Commercial IP service
3301 304 1071 290 TeliaNet Sweden
3352 303 1500 34 Ibernet, Internet Access Netw
3320 280 3477 234 Deutsche Telekom AG
8220 275 474 269 COLT Telecommunications
680 242 2025 239 DFN-IP service G-WiN
3246 228 487 219 Song Networks
8708 222 274 206 Romania Data Systems S.A.
6746 217 85 190 Dynamic Network Technologies,
1257 195 712 173 SWIPnet Swedish IP Network
3269 185 1925 70 TELECOM ITALIA
5515 177 840 125 Sonera Solution Autonomous Sy
8866 175 37 13 Bulgarian Telecommunication C
786 173 1794 173 The JANET IP Service
3215 169 1390 83 France Telecom Transpac
24863 168 38 9 LINKdotNET AS number
5400 167 328 137 BT Ignite European Backbone
3300 165 171 94 AUCS Communications Services
6830 160 669 33 UPC Distribution Services
12479 158 322 5 Uni2 Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 569 1048 217 UniNet S.A. de C.V.
22047 383 142 10 VTR PUNTO NET S.A.
11172 304 110 77 Servicios Alestra S.A de C.V
16814 295 18 7 NSS, S.A.
13999 187 51 26 Mega Cable S.A. de C.V.
14117 184 11 6 Telefonica del Sur S.A.
7303 155 73 19 Telecom Argentina Stet-France
6147 154 126 22 Telefonica Del Peru
11556 130 64 3 Cable-Wireless Panama
19169 123 8 30 Telconet
10481 121 48 8 Prima S.A.
6503 118 148 79 AVANTEL, S.A.
21826 115 15 21 INTERCABLE
5639 112 12 9 Telecommunications Services o
6505 107 88 79 Global One Communicaoes Ltda
18822 99 8 10 TELEFONICA MANQUEHUE
7315 96 6 3 Grupo Rey Moreno
19429 96 52 49 E.T.B.
11311 95 8 23 Sinectis S.A.
4270 92 17 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 279 819 234 The Internet Solution
8452 159 60 7 TEDATA
5536 122 8 16 Internet Egypt Network
2018 117 298 103 Tertiary Education Network
15475 102 84 4 Nile Online
2905 74 155 67 The Internetworking Company o
6713 67 71 10 Itissalat Al-MAGHRIB
20928 58 16 2 Noor Advanced Technologies AS
24835 55 34 6 RAYA Telecom - Egypt
5713 38 166 34 Telkom SA Ltd
33774 37 9 28 AS Number for Telecom Algeria
15706 31 8 3 Sudatel Internet Exchange Aut
12455 28 6 5 Jambonet Autonomous system
23889 25 7 10 MAURITIUS TELECOM
8524 23 1 4 AUCEGYPT Autonomous System
16637 23 10 21 Johnnic e-Ventures
10798 22 1 13 Standard Bank of South Africa
8346 21 14 18 SONATEL-AS Autonomous System
21280 21 4 4 Swift Global Kenya Ltd.Is an
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1208 972 Time Warner Telecom
18566 901 893 Covad Communications
9583 849 834 Sify Limited
4134 982 778 CHINANET-BACKBONE
4755 801 737 Videsh Sanchar Nigam Ltd. Aut
721 1029 719 DLA Systems Automation Center
11492 628 616 Cable One
22773 617 580 Cox Communications, Inc.
6197 987 529 BellSouth Network Solutions,
19916 563 509 OLM LLC
855 573 508 Canadian Research Network
5668 516 492 CenturyTel Internet Holdings,
19262 612 463 Verizon Global Networks
9498 519 448 BHARTI BT INTERNET LTD.
7545 516 446 TPG Internet Pty Ltd
7757 461 442 AT&T Broadband
17488 449 442 Hathway IP Over Cable Interne
3602 521 415 Sprint Canada, Inc.
812 438 410 Rogers WAVE
4766 710 409 Korea Telecom (KIX)
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65005 PRIVATE 159.153.148.0/22 24989 IX Europe Frankfurt
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
192.43.230.0/24 7575 Australian Academic and Rease
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:8 /11:20 /12:87
/13:199 /14:346 /15:688 /16:8689 /17:2993 /18:5030
/19:11251 /20:12445 /21:10830 /22:13800 /23:15020 /24:98195
/25:334 /26:286 /27:200 /28:62 /29:25 /30:55
/31:3 /32:39
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 884 901 Covad Communications
6197 783 987 BellSouth Network Solutions,
7018 748 1466 AT&T WorldNet Services
9583 668 849 Sify Limited
11492 620 628 Cable One
2386 617 884 AT&T Data Communications Serv
4323 582 1208 Time Warner Telecom
19916 557 563 OLM LLC
4766 514 710 Korea Telecom (KIX)
6198 501 636 BellSouth Network Solutions,
855 445 573 Canadian Research Network
7757 443 461 AT&T Broadband
7011 415 483 Citizens Utilities
5668 402 516 CenturyTel Internet Holdings,
702 373 587 UUNET - Commercial IP service
1239 368 852 Sprint
6517 343 369 Yipes Communications, Inc.
15270 340 368 PaeTec.net -a division of Pae
22773 322 617 Cox Communications, Inc.
812 317 438 Rogers WAVE
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:44 12:1633 13:1 15:12 16:3
17:3 18:4 20:43 24:861 25:1 30:2
32:66 38:194 40:54 44:3 47:3 52:4
55:1 56:3 57:34 58:117 59:167 60:179
61:826 62:768 63:1900 64:2970 65:2242 66:3062
67:577 68:665 69:1429 70:293 71:55 72:602
73:23 74:2 80:758 81:584 82:505 83:360
84:343 85:429 86:289 87:162 88:18 89:13
124:11 125:200 128:148 129:170 130:103 131:310
132:33 133:7 134:145 135:46 136:169 137:60
138:182 139:85 140:452 141:132 142:414 143:144
144:224 145:39 146:309 147:135 148:323 149:186
150:114 151:73 152:61 153:102 154:6 155:186
156:90 157:120 158:158 159:180 160:88 161:64
162:218 163:177 164:180 165:196 166:145 167:236
168:471 169:139 170:315 171:12 190:30 192:5760
193:3355 194:2491 195:1744 196:753 198:3897 199:3255
200:4246 201:577 202:6433 203:6773 204:3883 205:2102
206:2432 207:2927 208:1995 209:3534 210:1907 211:804
212:1280 213:1453 214:326 215:40 216:3871 217:1158
218:238 219:137 220:641 221:339 222:146
End of report
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